From the perspective of the area where rubber and plastic products are used, the common characteristics of rubber products are special high elasticity, excellent wear resistance, shock absorption, insulation and sealing properties. The analysis of the status quo of the rubber and plastic products industry pointed out that rubber products refer to raw rubber (natural rubber, synthetic rubber, reclaimed rubber, etc.) as the main raw material, various compounding agents as auxiliary materials, and undergoing processes such as rubber mixing, calendering, extrusion, molding, and vulcanization. , The various products manufactured also include rubber products reproduced from waste rubber.
Usually ultra-high molecular weight polyethylene (UHWMPE) is one of the most wear-resistant plastics. Choosing UHWMPE can easily improve the wear resistance of materials. In addition, plastics with high crystallinity and high regularity are more wear-resistant, plastics with high hardness are more wear-resistant, and plastics composed of macromolecules like benzene rings are less wear-resistant, such as polystyrene. In the modification of polypropylene (PP), polyolefin elastomer (POE), ethylene propylene diene rubber (EPDM), thermoplastic dynamic vulcanization rubber (TPV) (such as dynamic vulcanization PP/EPDM) are usually used to toughen PP. The addition of body generally leads to a decrease in scratch resistance, so it is very important to choose a suitable elastomer. The order of comparison of scratch resistance between them is as follows: TPV>EPDM>POE.
The work of Hexin rubber seals is achieved by contacting the rubber with the sealed part. For example, the oil seal is in contact with the rotating shaft surface with a small area of ??its lip at a certain pressure and is not leaking oil under the action of fluid lubrication. The ring is to give the rubber ring a cross-sectional compression force to achieve sealing, so the rubber is required to have high elasticity, oil resistance and good aging resistance.
